CA2959400A1 - Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence - Google Patents

Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence Download PDF

Info

Publication number
CA2959400A1
CA2959400A1 CA2959400A CA2959400A CA2959400A1 CA 2959400 A1 CA2959400 A1 CA 2959400A1 CA 2959400 A CA2959400 A CA 2959400A CA 2959400 A CA2959400 A CA 2959400A CA 2959400 A1 CA2959400 A1 CA 2959400A1
Authority
CA
Canada
Prior art keywords
filter
filter bank
prototype
analysis
filters
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2959400A
Other languages
English (en)
Other versions
CA2959400C (fr
Inventor
Per Ekstrand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dolby International AB
Original Assignee
Dolby International AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dolby International AB filed Critical Dolby International AB
Priority to CA2981351A priority Critical patent/CA2981351C/fr
Priority to CA2981317A priority patent/CA2981317C/fr
Priority to CA2981328A priority patent/CA2981328C/fr
Priority to CA2981323A priority patent/CA2981323C/fr
Publication of CA2959400A1 publication Critical patent/CA2959400A1/fr
Application granted granted Critical
Publication of CA2959400C publication Critical patent/CA2959400C/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/11—Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G10L19/0208—Subband vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/26—Pre-filtering or post-filtering
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0201—Wave digital filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0266—Filter banks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0272—Quadrature mirror filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0273—Polyphase filters
    • H03H17/0275—Polyphase filters comprising non-recursive filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0294—Variable filters; Programmable filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/307—Frequency adjustment, e.g. tone control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0294—Variable filters; Programmable filters
    • H03H2017/0297—Coefficients derived from input parameters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2240/00—Indexing scheme relating to filter banks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Operations Research (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Optical Filters (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Image Processing (AREA)

Abstract

Le document porte sur des bancs de filtres numériques sous-échantillonnés modulés ainsi que sur des méthodes et des systèmes de conception de tels bancs de filtres. En particulier, le présent document propose une méthode et un appareil destinés à améliorer les bancs de filtres numériques modulés à faible retard. La méthode emploie la modulation dun filtre prototype passe-bas asymétrique et une nouvelle méthode doptimisation des coefficients de ce filtre. De plus, un modèle spécifique destiné à un banc de filtres à canal (64) employant une longueur de filtre prototype des coefficients (640) et un retard de système déchantillons (319) est présenté. La méthode permet de substantiellement réduire les artéfacts attribuables au repli attribuable aux modifications indépendantes de signaux sous bande, par exemple lors de lutilisation dun banc de filtres comme égaliseur spectral. La méthode est préférablement mise en place dans un logiciel, sexécutant sur un PC standard ou un appareil de traitement numérique du signal, mais peut aussi être intégrée dans une puce personnalisée. La méthode offre des améliorations pour divers types dégaliseurs numériques, de filtres adaptatifs, de compresseurs-extenseurs multibandes et de bancs de filtres modulant lenveloppe spectrale employés dans la reconstruction haute fréquence ou les systèmes stéréo paramétriques.
CA2959400A 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence Active CA2959400C (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2981351A CA2981351C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou a la stereo parametrique
CA2981317A CA2981317C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou la stereo parametrique
CA2981328A CA2981328C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou la stereo parametrique
CA2981323A CA2981323C (fr) 2009-02-18 2010-02-17 Banc de filtres module exponentiel complexe destine a la reconstruction haute frequence ou parametrique stereo

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE0900217-1 2009-02-18
SE0900217 2009-02-18
US25710509P 2009-11-02 2009-11-02
US61/257105 2009-11-02
CA2901791A CA2901791C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2901791A Division CA2901791C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard

Related Child Applications (4)

Application Number Title Priority Date Filing Date
CA2981317A Division CA2981317C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou la stereo parametrique
CA2981351A Division CA2981351C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou a la stereo parametrique
CA2981328A Division CA2981328C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou la stereo parametrique
CA2981323A Division CA2981323C (fr) 2009-02-18 2010-02-17 Banc de filtres module exponentiel complexe destine a la reconstruction haute frequence ou parametrique stereo

Publications (2)

Publication Number Publication Date
CA2959400A1 true CA2959400A1 (fr) 2010-08-26
CA2959400C CA2959400C (fr) 2018-01-02

Family

ID=42137975

Family Applications (15)

Application Number Title Priority Date Filing Date
CA2929036A Active CA2929036C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard
CA2981351A Active CA2981351C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou a la stereo parametrique
CA2750673A Active CA2750673C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard
CA2901796A Active CA2901796C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard
CA2981328A Active CA2981328C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou la stereo parametrique
CA2981317A Active CA2981317C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou la stereo parametrique
CA2959400A Active CA2959400C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence
CA2961458A Active CA2961458C (fr) 2009-02-18 2010-02-17 Batterie de filtres de synthese a valeur complexe et decalage de phase
CA3074098A Active CA3074098C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou a la stereo parametrique
CA3160758A Pending CA3160758A1 (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou a la stereo parametrique
CA2981323A Active CA2981323C (fr) 2009-02-18 2010-02-17 Banc de filtres module exponentiel complexe destine a la reconstruction haute frequence ou parametrique stereo
CA2963742A Active CA2963742C (fr) 2009-02-18 2010-02-17 Banque de filtres modules exponentiels complexes destinee a la reconstruction haute frequence
CA2901800A Active CA2901800C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard
CA3028387A Active CA3028387C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou a la stereo parametrique
CA2901791A Active CA2901791C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard

Family Applications Before (6)

Application Number Title Priority Date Filing Date
CA2929036A Active CA2929036C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard
CA2981351A Active CA2981351C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou a la stereo parametrique
CA2750673A Active CA2750673C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard
CA2901796A Active CA2901796C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard
CA2981328A Active CA2981328C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou la stereo parametrique
CA2981317A Active CA2981317C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou la stereo parametrique

Family Applications After (8)

Application Number Title Priority Date Filing Date
CA2961458A Active CA2961458C (fr) 2009-02-18 2010-02-17 Batterie de filtres de synthese a valeur complexe et decalage de phase
CA3074098A Active CA3074098C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou a la stereo parametrique
CA3160758A Pending CA3160758A1 (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou a la stereo parametrique
CA2981323A Active CA2981323C (fr) 2009-02-18 2010-02-17 Banc de filtres module exponentiel complexe destine a la reconstruction haute frequence ou parametrique stereo
CA2963742A Active CA2963742C (fr) 2009-02-18 2010-02-17 Banque de filtres modules exponentiels complexes destinee a la reconstruction haute frequence
CA2901800A Active CA2901800C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard
CA3028387A Active CA3028387C (fr) 2009-02-18 2010-02-17 Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence ou a la stereo parametrique
CA2901791A Active CA2901791C (fr) 2009-02-18 2010-02-17 Banc de filtres modules a faible retard

Country Status (18)

Country Link
US (22) US8880572B2 (fr)
EP (10) EP3657675B1 (fr)
JP (1) JP5689820B2 (fr)
KR (16) KR101852753B1 (fr)
CN (12) CN105141283B (fr)
AU (1) AU2010215469B2 (fr)
BR (1) BRPI1008458B1 (fr)
CA (15) CA2929036C (fr)
DK (1) DK2975765T3 (fr)
ES (5) ES2627802T3 (fr)
HK (6) HK1217383A1 (fr)
HU (3) HUE056240T2 (fr)
MX (1) MX2011008515A (fr)
PL (1) PL2975764T3 (fr)
PT (1) PT2975765T (fr)
RU (1) RU2484579C2 (fr)
TW (14) TWI597939B (fr)
WO (1) WO2010094710A2 (fr)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113490133B (zh) 2010-03-23 2023-05-02 杜比实验室特许公司 音频再现方法和声音再现系统
US10158958B2 (en) 2010-03-23 2018-12-18 Dolby Laboratories Licensing Corporation Techniques for localized perceptual audio
US8958510B1 (en) * 2010-06-10 2015-02-17 Fredric J. Harris Selectable bandwidth filter
AU2011288406B2 (en) 2010-08-12 2014-07-31 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Resampling output signals of QMF based audio codecs
FR2969804A1 (fr) * 2010-12-23 2012-06-29 France Telecom Filtrage perfectionne dans le domaine transforme.
RU2012102842A (ru) 2012-01-27 2013-08-10 ЭлЭсАй Корпорейшн Инкрементное обнаружение преамбулы
EP2758896A4 (fr) * 2011-10-27 2015-07-01 Lsi Corp Processeur vectoriel à ensemble d'instructions comprenant fonction de convolution vectorielle pour filtrage fir
CN103918029B (zh) 2011-11-11 2016-01-20 杜比国际公司 使用过采样谱带复制的上采样
EP2897334B1 (fr) 2012-09-27 2017-03-29 Huawei Technologies Co., Ltd. Procédé et système de filtrage adaptatif basé sur sous-bande d'erreurs
MX342965B (es) * 2013-04-05 2016-10-19 Dolby Laboratories Licensing Corp Sistema y método de compansión para reducir el ruido de cuantificación usando extensión espectral avanzada.
US9923595B2 (en) 2013-04-17 2018-03-20 Intel Corporation Digital predistortion for dual-band power amplifiers
US9813223B2 (en) 2013-04-17 2017-11-07 Intel Corporation Non-linear modeling of a physical system using direct optimization of look-up table values
JP6305694B2 (ja) * 2013-05-31 2018-04-04 クラリオン株式会社 信号処理装置及び信号処理方法
US10580417B2 (en) * 2013-10-22 2020-03-03 Industry-Academic Cooperation Foundation, Yonsei University Method and apparatus for binaural rendering audio signal using variable order filtering in frequency domain
EP2980795A1 (fr) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Codage et décodage audio à l'aide d'un processeur de domaine fréquentiel, processeur de domaine temporel et processeur transversal pour l'initialisation du processeur de domaine temporel
EP2980794A1 (fr) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Codeur et décodeur audio utilisant un processeur du domaine fréquentiel et processeur de domaine temporel
CN106161313A (zh) * 2015-03-30 2016-11-23 索尼公司 无线通信系统中的电子设备、无线通信系统和方法
KR102264443B1 (ko) * 2015-04-30 2021-06-15 삼성전자 주식회사 필터 뱅크에 기반한 단일 캐리어 주파수 분할 다중접속 시스템에서 통신 장치 및 방법
CN105450199B (zh) * 2015-11-19 2019-02-22 厦门大学 具有快速建立时间的级联积分梳状滤波器及其设计方法
DE102016200637B3 (de) * 2016-01-19 2017-04-27 Sivantos Pte. Ltd. Verfahren zur Reduktion der Latenzzeit einer Filterbank zur Filterung eines Audiosignals sowie Verfahren zum latenzarmen Betrieb eines Hörsystems
EP3203695A1 (fr) * 2016-02-04 2017-08-09 ABB Schweiz AG Égaliseur de matrice pour transmission de type cmfb dans des canaux dispersif
EP3229490B1 (fr) * 2016-04-10 2019-10-16 Oticon A/s Banc de filtres exempte de distorsion pour un dispositif auditif
EP3236626B1 (fr) * 2016-04-21 2020-09-23 Institut Mines Telecom / Telecom Bretagne Filtre pour systèmes de communication basés sur modulation linéaire
US9954561B2 (en) * 2016-09-12 2018-04-24 The Boeing Company Systems and methods for parallelizing and pipelining a tunable blind source separation filter
CN106486110B (zh) * 2016-10-21 2019-11-08 清华大学 一种支持语音实时分解/合成的伽马通滤波器组芯片系统
CN108076239B (zh) * 2016-11-14 2021-04-16 深圳联友科技有限公司 一种改善ip电话回声的方法
CN106828810A (zh) * 2016-12-12 2017-06-13 罗煜 一种半潜式类钻井平台的海洋浮体设施
EP3340653B1 (fr) * 2016-12-22 2020-02-05 GN Hearing A/S Annulation d'occlusion active
TWI752166B (zh) * 2017-03-23 2022-01-11 瑞典商都比國際公司 用於音訊信號之高頻重建的諧波轉置器的回溯相容整合
US10845401B2 (en) * 2017-08-30 2020-11-24 Keysight Technologies, Inc. Nonlinear distortion detection
US10325583B2 (en) * 2017-10-04 2019-06-18 Guoguang Electric Company Limited Multichannel sub-band audio-signal processing using beamforming and echo cancellation
WO2019156644A1 (fr) * 2018-02-12 2019-08-15 Aselsan Elektroni̇k Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Procédé permettant la réduction de l'utilisation de ressources
EP3785260A1 (fr) * 2018-04-25 2021-03-03 Dolby International AB Intégration de techniques de reconstruction audio haute fréquence
CA3238620A1 (fr) 2018-04-25 2019-10-31 Dolby International Ab Integration de techniques de reconstruction haute frequence a retard post-traitement reduit
CN109104080A (zh) * 2018-07-18 2018-12-28 安徽省航嘉智源科技有限公司 一种功率变换器件中滤波调节方法、存储介质及终端
CN110896303B (zh) * 2018-09-12 2024-04-05 浙江菜鸟供应链管理有限公司 滤波方法和滤波装置以及存储介质
TW202105908A (zh) * 2019-06-26 2021-02-01 美商杜拜研究特許公司 具有改善頻率解析度的低延遲音訊濾波器組
KR102599837B1 (ko) 2020-09-25 2023-11-09 현대제철 주식회사 핫스탬핑 강재용 고온 내산화 코팅제 및 이를 이용하여 형성한 고온 내산화 코팅 강재
TWI781714B (zh) * 2021-08-05 2022-10-21 晶豪科技股份有限公司 用以等化輸入訊號以產生等化器輸出訊號的方法以及參數等化器
TW202329625A (zh) * 2021-11-30 2023-07-16 瑞典商都比國際公司 用於設計過取樣低延遲濾波組之方法及裝置
CN115457970B (zh) * 2022-09-06 2023-04-21 安徽大学 一种自动驾驶车内回声消除方法和系统

Family Cites Families (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2577084B1 (fr) * 1985-02-01 1987-03-20 Trt Telecom Radio Electr Systeme de bancs de filtres d'analyse et de synthese d'un signal
NL8700985A (nl) * 1987-04-27 1988-11-16 Philips Nv Systeem voor sub-band codering van een digitaal audiosignaal.
EP0400222A1 (fr) 1989-06-02 1990-12-05 ETAT FRANCAIS représenté par le Ministère des Postes, des Télécommunications et de l'Espace Système de transmission numérique utilisant le codage par sous-bandes d'un signal numérique
EP0566695B1 (fr) 1991-01-11 1999-06-02 Quidel Corporation Methode de dosage en une seule phase a flux lateral et support non- spongieux utilise dedans
US5418136A (en) 1991-10-01 1995-05-23 Biostar, Inc. Devices for detection of an analyte based upon light interference
US5436940A (en) * 1992-06-11 1995-07-25 Massachusetts Institute Of Technology Quadrature mirror filter banks and method
DE4231309A1 (de) * 1992-09-18 1994-03-24 Siemens Ag Umschaltbares nicht-dezimierendes/dezimierendes adaptives Entzerrerfilter
FR2697704B1 (fr) * 1992-10-29 1995-01-06 France Telecom Procédé et dispositif de segmentation en sous-bandes et de reconstruction d'un signal numérique, et dispositif correspondant.
US5732189A (en) * 1995-12-22 1998-03-24 Lucent Technologies Inc. Audio signal coding with a signal adaptive filterbank
US5852806A (en) * 1996-03-19 1998-12-22 Lucent Technologies Inc. Switched filterbank for use in audio signal coding
US6085077A (en) * 1997-01-21 2000-07-04 Us Air Force Hardware efficient digital channelized receiver
US6236731B1 (en) * 1997-04-16 2001-05-22 Dspfactory Ltd. Filterbank structure and method for filtering and separating an information signal into different bands, particularly for audio signal in hearing aids
DE19716452A1 (de) * 1997-04-21 1998-10-22 Bosch Gmbh Robert Datenreduzierte Kodierung von zeitlich veränderlichen Signalen mit Filterbänken
DE19724362A1 (de) 1997-06-10 1998-12-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren und Vorrichtung zum Beschlämmen und Trocknen von Glasrohren für Lampen
SE512719C2 (sv) 1997-06-10 2000-05-02 Lars Gustaf Liljeryd En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion
JP2001007769A (ja) * 1999-04-22 2001-01-12 Matsushita Electric Ind Co Ltd 低遅延サブバンド分割／合成装置
US6442581B1 (en) * 1999-09-21 2002-08-27 Creative Technologies Ltd. Lattice structure for IIR and FIR filters with automatic normalization
EP1104101A3 (fr) * 1999-11-26 2005-02-02 Matsushita Electric Industrial Co., Ltd. Appareil pour la combinaison/séparation d'un signal numérique en sous-bandes permettant d'obtenir un filtrage à séparation de bandes / combinaison de bandes avec une quantité réduite du temps de propagation de groupe
CN1264382C (zh) * 1999-12-24 2006-07-12 皇家菲利浦电子有限公司 多通道音频信号处理装置和方法
US6757395B1 (en) * 2000-01-12 2004-06-29 Sonic Innovations, Inc. Noise reduction apparatus and method
JP2001224544A (ja) 2000-02-16 2001-08-21 Matsushita Electric Ind Co Ltd 電気掃除機
JP2001285073A (ja) * 2000-03-29 2001-10-12 Sony Corp 信号処理装置及び方法
US6996198B2 (en) * 2000-10-27 2006-02-07 At&T Corp. Nonuniform oversampled filter banks for audio signal processing
SE0101175D0 (sv) * 2001-04-02 2001-04-02 Coding Technologies Sweden Ab Aliasing reduction using complex-exponential-modulated filterbanks
ES2299568T3 (es) * 2001-05-02 2008-06-01 Koninklijke Philips Electronics N.V. Procedimiento de filtrado inverso, procedimiento de filtrado de sintesis, dispositivo de filtro inverso, dispositivo de filtro de sintesis y dispositivos que comprenden tales dispositivos de filtro.
EP1397798B1 (fr) * 2001-06-08 2006-04-12 STMicroelectronics Asia Pacific Pte Ltd. Banc de filtrage unifie pour le codage audio
SE0202159D0 (sv) * 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
CA2354858A1 (fr) * 2001-08-08 2003-02-08 Dspfactory Ltd. Traitement directionnel de signaux audio en sous-bande faisant appel a un banc de filtres surechantillonne
FR2828600B1 (fr) * 2001-08-09 2006-01-27 France Telecom Procede de determination de coefficients de filtrage d'un banc de filtres module, terminal et application correspondants
WO2003019532A1 (fr) * 2001-08-21 2003-03-06 Koninklijke Philips Electronics N.V. Codage audio a banc de filtres non-uniforme
US7146391B2 (en) * 2002-01-24 2006-12-05 Broadcom Corporation Method and system for implementing SLICE instructions
US7447631B2 (en) * 2002-06-17 2008-11-04 Dolby Laboratories Licensing Corporation Audio coding system using spectral hole filling
US6792057B2 (en) * 2002-08-29 2004-09-14 Bae Systems Information And Electronic Systems Integration Inc Partial band reconstruction of frequency channelized filters
SE0202770D0 (sv) 2002-09-18 2002-09-18 Coding Technologies Sweden Ab Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks
TW200408813A (en) * 2002-10-21 2004-06-01 Neuro Solution Corp Digital filter design method and device, digital filter design program, and digital filter
US20050018796A1 (en) * 2003-07-07 2005-01-27 Sande Ravindra Kumar Method of combining an analysis filter bank following a synthesis filter bank and structure therefor
FR2860903B1 (fr) 2003-10-14 2006-05-05 Adequa Systems Sarl Dispositif de delivrance d'un nombre de tickets pre-imprimes, tickets de loterie notamment
JP4966013B2 (ja) * 2003-10-30 2012-07-04 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ オーディオ信号のエンコードまたはデコード
DE10352537A1 (de) * 2003-11-11 2005-06-09 Siemens Ag Verfahren und Filterbank zur spektralen Modifikation eines digitalen Signals
US7725324B2 (en) * 2003-12-19 2010-05-25 Telefonaktiebolaget Lm Ericsson (Publ) Constrained filter encoding of polyphonic signals
WO2005073959A1 (fr) * 2004-01-28 2005-08-11 Koninklijke Philips Electronics N.V. Decodage de signaux audio a l'aide de donnees de valeur complexe
US7734473B2 (en) * 2004-01-28 2010-06-08 Koninklijke Philips Electronics N.V. Method and apparatus for time scaling of a signal
CA2481631A1 (fr) * 2004-09-15 2006-03-15 Dspfactory Ltd. Methode et systeme de traitement des signaux physiologiques
US7620675B1 (en) * 2004-09-23 2009-11-17 Texas Instruments Incorporated Image and audio transform methods
US7917561B2 (en) * 2005-09-16 2011-03-29 Coding Technologies Ab Partially complex modulated filter bank
CN100568863C (zh) * 2005-09-30 2009-12-09 中国科学院上海微系统与信息技术研究所 基于多子带滤波器组的发射、接收装置及其方法
JP5452936B2 (ja) * 2006-01-27 2014-03-26 ドルビー・インターナショナル・アクチボラゲット 複素変調フィルタバンクを用いた効率的なフィルタリング
DE102006047197B3 (de) * 2006-07-31 2008-01-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Verarbeiten eines reellen Subband-Signals zur Reduktion von Aliasing-Effekten
US8036903B2 (en) * 2006-10-18 2011-10-11 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Analysis filterbank, synthesis filterbank, encoder, de-coder, mixer and conferencing system
DE102006049154B4 (de) * 2006-10-18 2009-07-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Kodierung eines Informationssignals
BRPI0709310B1 (pt) * 2006-10-25 2019-11-05 Fraunhofer Ges Zur Foeerderung Der Angewandten Forschung E V equipamento e método para a geração de valores de sub-banda de áudio e equipamento e método para a geração de amostras de áudio no domínio do tempo
CN1976226A (zh) * 2006-12-20 2007-06-06 北京中星微电子有限公司 正交滤波器组设计方法及装置
US8015368B2 (en) * 2007-04-20 2011-09-06 Siport, Inc. Processor extensions for accelerating spectral band replication
CN101546992B (zh) * 2008-03-29 2011-10-26 华为技术有限公司 一种滤波方法及滤波器

Also Published As

Publication number Publication date
TW201547195A (zh) 2015-12-16
CA3074098A1 (fr) 2010-08-26
EP2975765A3 (fr) 2016-05-11
HK1218997A1 (zh) 2017-03-17
EP4213382B1 (fr) 2024-06-19
TWI621332B (zh) 2018-04-11
EP2975766B1 (fr) 2017-04-05
US20170169835A1 (en) 2017-06-15
CA2963742A1 (fr) 2010-08-26
TW201733267A (zh) 2017-09-16
CN109586686A (zh) 2019-04-05
KR101806105B1 (ko) 2017-12-07
CA3074098C (fr) 2022-07-19
KR20160106209A (ko) 2016-09-09
CA2981328A1 (fr) 2010-08-26
CA2981323C (fr) 2018-06-05
CN109525217A (zh) 2019-03-26
US20170140770A1 (en) 2017-05-18
KR20170098972A (ko) 2017-08-30
CN105141285B (zh) 2018-04-13
EP2399338A2 (fr) 2011-12-28
TWI662788B (zh) 2019-06-11
US20220059111A1 (en) 2022-02-24
ES2627775T3 (es) 2017-07-31
CN105141284A (zh) 2015-12-09
US20170194942A1 (en) 2017-07-06
US20200066292A1 (en) 2020-02-27
TWI613887B (zh) 2018-02-01
CN109525218A (zh) 2019-03-26
US9762210B1 (en) 2017-09-12
EP4213382A1 (fr) 2023-07-19
HUE061934T2 (hu) 2023-09-28
KR20170097798A (ko) 2017-08-28
KR101852753B1 (ko) 2018-04-30
KR20150101474A (ko) 2015-09-03
TWI559680B (zh) 2016-11-21
KR101667244B1 (ko) 2016-10-18
CN102318189A (zh) 2012-01-11
KR101495064B1 (ko) 2015-02-24
JP2012518354A (ja) 2012-08-09
US20170069334A1 (en) 2017-03-09
US20170238094A1 (en) 2017-08-17
CN105141283B (zh) 2019-09-06
HK1217384A1 (zh) 2017-01-06
TW202318801A (zh) 2023-05-01
KR101781341B1 (ko) 2017-09-25
US9667229B1 (en) 2017-05-30
EP3657675A1 (fr) 2020-05-27
KR101657506B1 (ko) 2016-09-20
AU2010215469A1 (en) 2011-08-18
TW201547194A (zh) 2015-12-16
CN105141284B (zh) 2018-05-15
EP2975766A3 (fr) 2016-05-11
EP3226414B1 (fr) 2019-10-23
EP2975765A2 (fr) 2016-01-20
KR20170043673A (ko) 2017-04-21
WO2010094710A2 (fr) 2010-08-26
US20170264271A1 (en) 2017-09-14
US11107487B2 (en) 2021-08-31
JP5689820B2 (ja) 2015-03-25
KR20180124160A (ko) 2018-11-20
US9722578B2 (en) 2017-08-01
CN109525219B (zh) 2023-08-01
AU2010215469B2 (en) 2013-05-16
CN109525219A (zh) 2019-03-26
US20150333734A1 (en) 2015-11-19
BRPI1008458B1 (pt) 2020-11-24
TWI618350B (zh) 2018-03-11
KR101772378B1 (ko) 2017-08-29
CN109586686B (zh) 2023-06-27
CA2929036A1 (fr) 2010-08-26
CN109495085A (zh) 2019-03-19
US11735198B2 (en) 2023-08-22
KR20220088959A (ko) 2022-06-28
EP2975764B1 (fr) 2017-04-05
KR101806106B1 (ko) 2017-12-07
CA2959400C (fr) 2018-01-02
TW201733266A (zh) 2017-09-16
CA3028387A1 (fr) 2010-08-26
CA2901800C (fr) 2016-06-28
HK1217383A1 (zh) 2017-01-06
EP2975764A2 (fr) 2016-01-20
EP2975766A2 (fr) 2016-01-20
PT2975765T (pt) 2017-05-25
US9715881B1 (en) 2017-07-25
CN105141283A (zh) 2015-12-09
CA2929036C (fr) 2017-01-10
MX2011008515A (es) 2011-09-08
US9716486B1 (en) 2017-07-25
KR101702856B1 (ko) 2017-02-06
CA3160758A1 (fr) 2010-08-26
EP3226414A1 (fr) 2017-10-04
CN102318189B (zh) 2015-09-16
US9653090B1 (en) 2017-05-16
TWI597939B (zh) 2017-09-01
US20170206910A1 (en) 2017-07-20
CA2901800A1 (fr) 2010-08-26
TWI618351B (zh) 2018-03-11
US9583118B1 (en) 2017-02-28
TW201810942A (zh) 2018-03-16
US20170070211A1 (en) 2017-03-09
CA2981351A1 (fr) 2010-08-26
BRPI1008458A2 (pt) 2017-09-26
CA2981317C (fr) 2018-05-29
CN109525216A (zh) 2019-03-26
TW201644195A (zh) 2016-12-16
CA2981323A1 (fr) 2010-08-26
US9760535B1 (en) 2017-09-12
CN109525217B (zh) 2023-02-28
KR101726584B1 (ko) 2017-04-13
EP4213382B8 (fr) 2024-07-24
KR20180030937A (ko) 2018-03-26
US9721577B1 (en) 2017-08-01
RU2011134419A (ru) 2013-03-27
US20160329062A1 (en) 2016-11-10
ES2896333T3 (es) 2022-02-24
CA2981317A1 (fr) 2010-08-26
TWI614989B (zh) 2018-02-11
TW201724740A (zh) 2017-07-01
US9743183B1 (en) 2017-08-22
US20110302230A1 (en) 2011-12-08
KR20170045380A (ko) 2017-04-26
TWI618352B (zh) 2018-03-11
US9318118B2 (en) 2016-04-19
KR20140019480A (ko) 2014-02-14
CA2963742C (fr) 2017-07-25
TW201511468A (zh) 2015-03-16
KR20160121609A (ko) 2016-10-19
US9918164B2 (en) 2018-03-13
ES2625398T3 (es) 2017-07-19
US20150332703A1 (en) 2015-11-19
US9865275B2 (en) 2018-01-09
KR20150101473A (ko) 2015-09-03
TW201130224A (en) 2011-09-01
CA2750673A1 (fr) 2010-08-26
CA2901796C (fr) 2016-06-28
KR20170097796A (ko) 2017-08-28
RU2484579C2 (ru) 2013-06-10
TW201813298A (zh) 2018-04-01
TWI597938B (zh) 2017-09-01
TW201810943A (zh) 2018-03-16
CA2961458A1 (fr) 2010-08-26
CN109586684A (zh) 2019-04-05
US10460742B2 (en) 2019-10-29
EP2399338B1 (fr) 2019-09-18
US20170206911A1 (en) 2017-07-20
CA2901796A1 (fr) 2010-08-26
ES2944474T3 (es) 2023-06-21
CA2981328C (fr) 2018-05-29
DK2975765T3 (en) 2017-06-06
EP3226415B1 (fr) 2019-08-14
US9634647B2 (en) 2017-04-25
US20180146288A1 (en) 2018-05-24
KR20170097797A (ko) 2017-08-28
HUE032599T2 (en) 2017-10-30
KR101920199B1 (ko) 2018-11-20
US20170085250A1 (en) 2017-03-23
EP3937378B1 (fr) 2023-03-29
US8880572B2 (en) 2014-11-04
US9449608B2 (en) 2016-09-20
HK1218592A1 (zh) 2017-02-24
HUE056240T2 (hu) 2022-02-28
WO2010094710A3 (fr) 2011-03-31
ES2627802T3 (es) 2017-07-31
CA2901791A1 (fr) 2010-08-26
EP4415261A2 (fr) 2024-08-14
CN109525218B (zh) 2023-12-29
TW201810940A (zh) 2018-03-16
HK1217382A1 (zh) 2017-01-06
HK1218996A1 (zh) 2017-03-17
KR20170031797A (ko) 2017-03-21
KR102013568B1 (ko) 2019-08-23
CA2961458C (fr) 2017-07-18
US20170262409A1 (en) 2017-09-14
EP2975764A3 (fr) 2016-06-08
PL2975764T3 (pl) 2017-08-31
US20150333733A1 (en) 2015-11-19
EP3226415A1 (fr) 2017-10-04
US20240055010A1 (en) 2024-02-15
EP3657675B1 (fr) 2021-09-08
CN109586685A (zh) 2019-04-05
KR101699709B1 (ko) 2017-01-25
US9779748B2 (en) 2017-10-03
KR20110127704A (ko) 2011-11-25
CA3028387C (fr) 2020-04-14
EP3937378A1 (fr) 2022-01-12
KR101852995B1 (ko) 2018-04-30
TWI569573B (zh) 2017-02-01
CN105141285A (zh) 2015-12-09
US20140304315A1 (en) 2014-10-09
KR101812003B1 (ko) 2017-12-26
US9349382B2 (en) 2016-05-24
CA2750673C (fr) 2016-12-20
CA2981351C (fr) 2019-02-12
CA2901791C (fr) 2017-04-18
TWI458258B (zh) 2014-10-21
TW201810941A (zh) 2018-03-16
TWI559679B (zh) 2016-11-21
EP2975765B1 (fr) 2017-04-05

Similar Documents

Publication Publication Date Title
CA2959400C (fr) Banc de filtres modules exponentiels complexes destine a la reconstruction haute frequence
AU2021204773B2 (en) Complex Exponential Modulated Filter Bank for High Frequency Reconstruction or Parametric Stereo
AU2022241538B2 (en) Complex Exponential Modulated Filter Bank for High Frequency Reconstruction or Parametric Stereo
AU2015210384B2 (en) Apparatus and Method for Processing an Audio Signal

Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20170227

EEER Examination request

Effective date: 20170227